Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos touchdowns têm pontos extras maiores que 0 e pontos de 48?
 ###Tabelas: CREATE TABLE post_war_1946-1974 (post_war_1946-1974_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Home Team VARCHAR, Score VARCHAR, Away Team VARCHAR, Competition VARCHAR, Winner VARCHAR, Head to Head VARCHAR) CREATE TABLE blue_team (blue_team_id AUTO_INCREMENT PRIMARY KEY, Learner driver VARCHAR, Partner VARCHAR, Driver's Age INT, Years on learners INT, Licence test attempts INT, Passed Yet VARCHAR) CREATE TABLE michigan_48_ohio_northern_0 (michigan_48_ohio_northern_0_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Touchdowns INT, Extra points INT, Field goals INT, Points INT) CREATE TABLE elementary_schools_grades_k-6 (elementary_schools_grades_k-6_id AUTO_INCREMENT PRIMARY KEY, Elementary Schools VARCHAR, Mascot VARCHAR, Address VARCHAR, Principal (2013-2014) VARCHAR, Assistant Principal (2013-2014) VARCHAR) CREATE TABLE season_by_season_statistics (season_by_season_statistics_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Points per Game VARCHAR, Total Yards per Game VARCHAR, Rushing Yards per Game VARCHAR, Passing Yards per Game VARCHAR, Sacks VARCHAR, Interceptions VARCHAR)  
SELECT COUNT Touchdowns FROM michigan_48_ohio_northern_0 WHERE Extra points > 0 AND Points = 48